It's The Parasite... The one creature on Earth who can be as powerful as I am... Perhaps even more powerful, since he can steal my strength... And keep his own for an edge! The first time we fought... He almost smashed me to a pulp... I defeated him-- Barely-- By my wits-- But he's had years to grow smarter-- More deadly! But I can't think about that--! Have to stand up-- And fight-- Even if it kills me! 
- — Superman
Superman #304 is an issue of the series Superman (Volume 1) with a cover date of October, 1976. It was published on July 12, 1976.
Synopsis for "The Parasite's Prism of Peril!"
The Parasite creates a power-prism that gives other people super-powers and turns them against Superman.
Appearing in "The Parasite's Prism of Peril!"
Featured Characters:
Supporting Characters:
- Jonathan Ross
- Albert Michaels
- Jenet Klyburn (First appearance)
- Lois Lane
Antagonists:
- Parasite (Dies)
Other Characters:
- Josh Coyle (Cameo)
- Pete Ross (Mentioned only)
- Whirlicane (Mentioned only)
- WGBS Employees (Unnamed)
- Eddie Foil (Single appearance)
- Moose MacElroy (Single appearance)
- Metropolis Police Department (Unnamed)
Locations:
- Earth-One
- Metropolis
- Pier 3
- Warehouse
- Galaxy Communications Building
- Clark Kent's Office
- WGBS Studios
- S.T.A.R. Labs
- Lecture Hall
- Pier 3
- Metropolis
Items:
- Prism of Power (First appearance)
- High Intensity Industrial Laser (Destroyed)
Trivia
- Superman appears to go through with a premeditated killing of the Parasite in this issue, contrary to his code to preserve all forms of life at all costs.